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190991 (2001 XQ238)
Classification: Main-belt Asteroid          SPK-ID: 2190991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1455313549952241 3.2618e-08  
a 2.46848675922716 1.0412e-08 au
q 2.109244536369062 8.4801e-08 au
i 1.895702939857336 6.333e-06 deg
node 5.857473723498184 0.00010471 deg
peri 82.81023936784702 0.00010978 deg
M 324.3211789404547 2.907e-05 deg
tp 2459340.895317923940
(2021-May-06.39531792)
0.00011453 TDB
period 1416.591494664777
3.88
8.963e-06
2.454e-08
d
yr
n .2541311319147731 1.6079e-09 deg/d
Q 2.827728982085258 1.1928e-08 au
  Orbit Determination Parameters
   # obs. used (total)      790  
   data-arc span      6967 days (19.07 yr)  
   first obs. used      2001-12-15  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51027  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:09:57  

Additional Information
 Earth MOID = 1.1264 au 
 Jupiter MOID = 2.36004 au 
 T_jup = 3.470 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.91   n/a E2021B55  

190991 (2001 XQ238)          Discovered 2001-Dec-15 by LINEAR at Socorro
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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